Final answer:
The autonomous agencies affiliated with the United Nations include specialized agencies and related intergovernmental organizations (IGOs). They operate independently but share information with the UN and act autonomously within the UN framework.
Step-by-step explanation:
The autonomous agencies affiliated with the United Nations, but not under its control, include specialized agencies and related intergovernmental organizations (IGOs).
Specialized agencies such as the World Trade Organization (WTO) and the International Atomic Energy Agency (IAEA) operate independently but share information with the UN.
Related IGOs, like the Universal Postal Union (UPU) and the World Meteorological Organization (WMO), are specialized agencies operating within the UN framework. These agencies act autonomously with their own constitutions, leaders, headquarters, and bureaucratic organizations.